| 7050Al/Gr复合材料的组织及力学性能 |
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| 引用本文： | 周国燕,罗兵辉,柏振海,高建华.7050Al/Gr复合材料的组织及力学性能[J].粉末冶金材料科学与工程,2008,13(6). |
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| 作者姓名： | 周国燕 罗兵辉 柏振海 高建华 |
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| 作者单位： | 中南大学,材料科学与工程学院,长沙,410083 |
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| 基金项目： | 国防科工委资助项目
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| 摘 要： | 为获得一种力学性能和阻尼性能俱佳的材料，在7050Al合金基体中加入4％（体积分数）的石墨（Gr）作为增阻体，用包套挤压的方法制备7050Al/Gr复合材料，研究石墨的加入对7050A1合金组织和力学性能的影响。结果表明加入石墨后，时效过程中沉淀相析出长大速率加快，峰时效时间提前约4h，峰时效强度和硬度都有所降低。7050A1／Gr复合材料峰时效强度（吼）和硬度（HB）分别为521MPa和152，而7050Al合金峰时效强度和硬度分别为558MPa和158。
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| 关 键 词： | 7050Al/Gr复合材料 显微组织 时效析出 力学性能 |
Microstructure and mechanical properties of 7050Al/Gr composites |
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| ZHOU Guo-yan,LUO Bing-hui,BAI Zhen-hai,GAO Jian-hua.Microstructure and mechanical properties of 7050Al/Gr composites[J].materials science and engineering of powder metallurgy,2008,13(6). |
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| Authors: | ZHOU Guo-yan LUO Bing-hui BAI Zhen-hai GAO Jian-hua |
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| Affiliation: | ZHOU Guo-yan,LUO Bing-hui,BAI Zhen-hai,GAO Jian-hua (School of Materials Science , Engineering,Central South University,Changsha 410083,China) |
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| Abstract: | In order to obtain a kind of new material with both good mechanical and fine damping properties, 7050Al/Gr composites containing 4%Gr (volume fraction) was prepared by sheath hot extraction and used to investigate its microstructure and mechanical properties. The results show that: in 7050Al/Gr composites, the precipitation and growth rates of precipitation phase increase, the aging peak time and strength/hardness decrease, comparing with 7050Al. The tensile strength and hardness of 7050Al/Gr composites at ... |
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| Keywords: | 7050Al/Gr composites microstructure precipitation mechanical properties |
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